[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] DL385 G2 - PCI-DMA: Random memory would be DMAed
Langsdorf, Mark wrote: To answer Mark's question: > What kernel are you using? from gentoo: xen-sources-2.6.20-r6 Regarding the full error message, all I am getting is: kernel panic not syncing: PCI-DMA: Random memory would be DMAedsince the machine is rebooting after that. There maybe somewhere else to get more detail, but beyond dmesg ormessages I am not sure where else to look.For some reason, your kernel is running with pci-gart.c enabled, and dom0 is trying to allocate DMA through theAGP GART in your AMD64 processor's Northbridge. I didn't think Xen supported pci-gart, but maybe I misseda changeset. At any rate, passing iommu=soft should disable the pci-gart and allow you to use bounce buffering. Hopefully, that should clear up your problem. -Mark Langsdorf Operating System Research Center AMD Unfortunately I am still having the problem. Having booted off a cd to preserve log files a quick grep on dmesg shows: PCI-DMA: Using software bounce buffering for IO (SWIOTLB)So it is enabled, but still the kernel panic. Any other ideas on where to poke around? Thanks, Zak _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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